Overall Project
1 Ordering
party
Metropolitan Expressway Co., Ltd.
2 Project name (Contract work) Tunnel ventilation equipment project for the Metropolitan Expressway’s Yokohama Circular Northwest Route
3 Construction period February 21, 2017 to March 10, 2020
4 Ventilation system Concentrated-exhaust, vertical-flow ventilation system
Each Piece of Equipment
Facility name Equipment name Number of units Specifications
Higashigata Ventilation Station Air supply and exhaust fan 2 units Fan diameter: 2800 mm
Flow rate: 151m3/s
Wind pressure: 2100Pa
Motor output: 490 kW
Silencers 1 set -
Devices to install and remove equipment
Distribution boards
Automatic ventilation controller
Other incidental equipment
1 set -
Kita-Hassaku Ventilation Station Air supply and exhaust fan 2 units Fan diameter: 2800mm
Flow rate: 145m3/ s
Wind pressure: 2100 Pa
Motor output: 470 kW
Silencers 1 set -
Devices to install and remove equipment
Distribution boards
Other incidental equipment
1 set -
Inside the tunnel Jet fans 32 units Fan diameter: 1250 mm
Measuring equipment 1 set -